Assigitob to layne



- 1,64%,592 O 25 K PARKER mom: FOR DIE CASTING scaszmme BUTTONS Filed July 11; 1922 2 Sheets-Sheet;

9 A .INVENTOR WITNESS 7' 5 4 WW Q BY v MUM 6 TORNEY5 "1,646,592 1927' w. A. PARKER MOLD FOR DIE CASTING SCREENING BUTTONS Filed July 11, 1922 2 Sheets-Sheet 2 WITNESS A TTORNE Y5 UNIT j teats-a2 Mar critics.

WILLIAM A. PARKER, or ERIE, PENNSYLVANIA, ASSIGNOR TOVVLAYNE a BOWLER CORPORATION, A CORPORATION OF CALIFORNIA.

Mom) BOBBIE-CASTING SCREENING UTToNsQ Application filed July 11,

This invention relates to screening buttons and molds for die-casting the same. The screening button to which this invention relates is employed in oil and water wells for the purpose of screening out sand and other detritus from the liquid, the buttons being externally threaded and screwed into openings formed in the well pipes, and having slots or apertures formed therein for the passage of theliquid, such slots tapering to Ward the exterior, i. e., the small end being at the periphery of the'pipes. The buttons are also ordinarily arcuate to conform to the curvature of'the particular pipe in which they are to be used." The size of the screening openings or slots also varies with the particular class of service and'such openings are sometimes only .010 at the small end, and sometimeseven less. 1 r

The invention does not relate to suchbuttons broadly, inasmuch as they are wellknown in this rt, but, heretofore, to the best of my knowledge, these'buttons have never been die-cast, and I believe that I am the first to die-cast thesame', notwithstanding that there. mayhave been intimations that the same might be die-cast. Die-casting such externally threadedandslotted'buttons will, of course, greatly decrease the cost of production and it is the purpose ofmy invention to successfully die-castthe same in suchmanner as to obtain a u'sefu'land superior product, economical to manufacture.

The foregoing, together with such ether objects as may hereinafter appear, I accomplish by means of a construction"illustrated in'the' accompanying drawings; wherein i Fig. 1 is a plan view of amold embodying my invention; Fig. 2is a section taken'on the.

. line 22 of Fig. 1'; Fig. 3 is'afragrnentary sectional viewillustrating a detail "of invention Fig. 4 illustrates the mold'partly 1 open, with the-top "member removed; Fig. 5 is aside elevation of onset the buttons illus trated in Figl' l, drawn on an enlarged scale; Fig. 6 is a side elevation'ofa button taken at right angles to Fig. 5; and Fig. a

section taken on the line 7 *7 of Fig.

Referring now to F igs.'1 and-'2, it will'be seen that the mold comprises a top member A, a bottom member B and.twointermedlate members 0 and D; The members'C and'D are laterally retractable and are slidably supported; in place by the guide 7 screwed to thefbotto'm'B'. Handles-8 serve to close and 1922 Serial ire/574,123.

open the intermediate members. The top member is provided with a pair of pins 9 and each intermediate member has a hole 10 and when the parts are in operative position for a casting, the pins 9 project into the hole 10 and serve to lock the intermediate members C and D, preventing their spreading apart as the hot metal is forced into the mold cavity, the metal being forced in at a very high pressure. I V p The-mold parts cooperate to form a pair of cavities indicated as a whole by the reference character'E. The member B forms the bottom of these mold cavities, the member A, the top of the cavities, and the intermediate members, the sides. The thread-formingportions of the cavity are in the inter mediate members and where the buttons are arcuate, the curvature is in the upper and lower members. In this connection, for 'reasons which will hereinafter appear, it will be noted that the curvature of the buttons terminates approximately at the base of the threads, as shown, for example, in Figs. 5 and 6. From that portion outward the'buttons are flat except where the threads are complete. Where the slots are to be of small dimensions, say, for example, .010 I form the same by employing appropriately shaped plates-11, of the desired dimension. said plates beingset or mounted in a block 12 set into thelower member. These plates in the, drawings are shownin exaggerated size. \Vhere slots of considerable width are to be. formed, the plates orbars may be formed integrally with the lower member.

- The gate 1 3 through which the hot metal is introduced, is located intermediate the mold cavities and" its bottom portions 13' are formedby the top member and the intermediate members, such portions'fiaring out portion 13, i. e., in a plane cutting the centers of the twomold cavitiesandthe center of the gate. The relation of the'thread to thegate is illustrated in dottedlinesfin Fig. s

and diagonally of the mold cavity.

The metal is projected from the gate portion 13' into the mold cavity in die form of a thin, wide sheet in approximately the plane indicated by the line a, i. e., the metal 5 is fed diagonally into the mold cavities.

The air above andbelow the incoming metal, as the cavity fills, vents itself out through the meeting faces of the top, intermediate and bottom members, and I have discovered that unless the metal were fed in substantially this manner, the air would be trapped.

It will also be noted that the incoming metal is fed in a direction longitudinally of the plates 11, striking their inner vertical edges. It the metal were introduced transversely, i. e., aainst the sides of the plates, the latter woud be crumpled over and in addition air would trap itself between the plates.

Furthermore, the metal cannot be introduced in a thick or localized stream for otherwise the plates will be turned over. From inspection of Fig. 1 it will be seen that the sheet of metal entering the cavities is approximately wide as the distance from outer to outer plate. By feeding the hot metal in this manner I am also enabled to introduce it just at the edge of the thread so that when the riser is removed by causing thepin 1.4 to travel upward, the fin may be readily broken or brushed oil, leaving a clean thread. 7

-ZBy stopping the curvature of the button at the base of the thread, I zaan enabled to confine the curvatureof the mold cavity in the upper and lower members. This makes it possible to simplify the construction of the mold and in addition it would otherwise be exceedingly difficult, if not impossible, to construct a mold. with more than one cavity.

By the foregoing I am enabled to economicall. produce a die cast screening button, rea y for use. 7 i

What I claim is:

1. A mold for die-casting screening buttons having an appropriate mold cavity and members for. forming the screening slots and provided with a gate for the introduction of the hot metal so located as to feed the metal into theinold cavity in a direction substantially parallel with thesaid members.

2. A moldio'r die-casting screening buttonshaving an appropriate "mold cavity and members for forming the zscreeming slots and providedwithia gate for the introduction oil? the hot metal so located as to teed the metal into the mold cavity in a direction substantially parallel with the said members 3. A m-ulrti-part mold for die-casting screening buttons having the mold cavity and the gate formed and arranged so that,

as the metalenters, the air will vent between mold-parts inthe mapper and lower portions of the cavity above and below the metal. 1

provided with a gate adapted to feed the metal into an edge of the cavity diagonally across the cavity.

5. A mold for die-casting screening buttons having an appropriate mold cavity and members for forming the screening slots and provided with a gate for the introduction of the hot metal so as to teed the metal into the mold cavity in a direction substantially parallel with the said. members, the gate icing of substantial width across the series of the said member but narrowed to a mere crack in its other dimension.

6. A mold for die-casting screening buta tons having an appropriate mold cavity and members for forming the screening slots and provided with a gate for the-introduction of the hot metal so located as to feed the metal into the mold cavity in a direction substantially parallel with the said members, [the gate oeing of a width such that the incoming metal is spread out crosswise olf and does not all impinge on one of said members.

7. A mold tor die-casting screening buttons having an appropriate mold cavity and members for forming the screening slots and provided with a gate for the introduction of the hotmeta-l of such width that the metal is fiedin the form of a thin sheet. n

, 8. A mold for die-casting screening buttons having an appropriate mold cavity and members for forming the screening slots and provided with a gate for the introduction of the hot metalso locatedas to feed the metal into the mold cavity in a plane dividing the mold cavity, the mold having means whereby air may be vented from the space; on opposite sides of the incoming metal. e

9. A mold tons having an appropriate mold cavity and members for forming the screening :slots and provided with a gate for the introduction of the liotmetal so located-as to feed the metal into the mold cavity against edges of 11. A. mold for die-casting externally:

threaded-screening buttons. provided with a simdiecasting screening but,

gate opening into the edgeof a thread forming ortion of the cavity. 1 i i 12. A mold t I d e-casting externally threaded screening buttons provided with a.

gate opening into the edge of a thread forming portion of the cavity approximately at one of the ends of the thread.

13. A multi-part mold for die-casting screening butt0ns comprising an upper member, a lower member, and two laterally retractable intermediate members, one of the first two members being provided with portions forming the slots in the button.

lhA multi-part mold for die-casting arcuate screening buttons comprising an upper member, a lower member, and two laterally retractable intermediate members, said members cooperating to form the mold cavity and the curvature of the mold cavity that gives the buttons their arcuate form being in the upper and lower members.

15. A multi-part mold for die casting screening buttons comprising an upper memher, a lower member, and two laterally retractable intermediate members, one of the first two members being provided with portions forming the slots in the button and the thread forming portions of the cavity being in the intermediate members.

16. A multi-part mold for die-casting arcuate screening buttons comprising an upper member, a lower member, and two laterally retractable intermediate members, said members cooperating to form the mold cavity and thecurvature of the mold cavity that gives the buttons their arcuate form being in the upper and lower members and the thread forming portions of the cavity being in the intermediate members. 7

In testimony whereof, I have hereunto signed my name.

WILLIAM A. PARKER. 

